.goods{
    width: 400px;
    height: 330px;
    margin: 50px auto;
    border: 1px solid gainsboro;
    padding: 5px;
    box-sizing: border-box;
}

.goods .big{
    width: 100%;
    height: 260px;
}

.goods ul{
    display: flex;
    flex-wrap: wrap;
}

.goods ul li img{
    width:60px;
    height: 40px;
    margin: 10px 8px;
    border: 1px solid rgb(139, 137, 137);
    padding: 3px;
    box-sizing: border-box;
    cursor: pointer;
}

.goods ul li .bg{
    border: 3px solid red;
}